according to an fbi, a man from syracuse, new york is responsible. the letters address a number of topics that include aids, abortion rights, and 9/11 conspiracy theories. >> in macy's and somewhat bizarre, somewhat unusual. to this person they can be very, very real. they can be so extreme they may even be delusional. >> the fbi says the man is about 35 years old and has had significant contact with the mental-health system. it is released to pictures of the letters hoping someone will recognize the handwriting. it also offers a $10,000 reward for information leading to the suspect. the fbi says the powder in the letters is usually baby powder or detergent. >> 1 year ago today 11 people were killed as their plane came crashing down at the reno air races. this morning the ceremony is planned to mark the somber anniversary. first responders were recognized earlier this week, but today the focus will be on remembering those who died. i'd have -- flights have been flying at half staff in reno all week. today those flights will be rid selecting the end o